I think he would of scared the hell out of some, and some would laugh in his face, and box him.
Who would beat him
Rocky -- He would scare Tyson
ALI -- I think his style would of drove tyson nuts
Foremen -- Another one who would have Tyson quaking in his boots
Liston -- Only reason I think he would win, is the fact that I actually think that Liston is a worse cat then Tyson, and he would use his powers of Darkness to defeat Tyson.
Holyfield -- Styles make fights, and Holy was fearless.
Tyson would beat
Frazier -- Great fight, but Frazier would get KO'ed
Louis -- The Brown bomber would meet his match
Homes -- Homes is a great fighter, but Tyson would have him scared out of his wits.